Atomic Mass, Formula Mass and Percentage Composition Calculations
In this elements activity, students calculate the relative formula mass and percentage composition calculations for given elements. This activity has 16 problems to solve.
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New Review Chemistry: Average Atomic Mass (AMU, Daltons, etc.)
Scientists created a new measurement, the atomic mass unit, which is defined as carbon 12 = 12amu. So why isn't carbon listed as having exactly 12 amu on the periodic table? An installment from the Socratica chemistry playlist answers...
7 mins 9th - 12th Science CCSS: Adaptable
Percent Composition and Empirical Formulas
Investigate empirical formulas and their relationships to the composition of a compound. The lesson first demonstrates a percent composition calculation. It then defines an empirical formula and applies it to given masses to determine a...
5 mins 9th - 12th Science CCSS: Adaptable
Understanding Atomic Number and Atomic Mass
The amount of information you can learn about an element from the periodic table is amazing! Young scientists learn how to interpret the atomic number and atomic mass. Using a carbon atom as an example, the instructor describes the...
2 mins 9th - 12th Science
Chemistry Lesson: Mole Ratio from Chemical Formulas
Need an exciting way to teach mole ratios? This short video segment details a step-by-step method to determine the mole ratio of chemical compounds and relates these ratios to molar mass. The resource may be used to enhance your current...
14 mins 9th - 12th Science
The Law of Conservation of Mass
This short video simply explains the Conservation of Mass with graphics that show the atoms being conserved in pictures of balanced equations. The connection between mass and energy is explained and Einstein's energy equation is mentioned.
5 mins 7th - 12th Science CCSS: Adaptable